error code

sonce the last update/patch i cannot connect anymore to the game it gives me errorcode 12029 what does it mean and how can i fix it? i can however still acces my page with my stats and overview. Thanks in advance for all help.

txs for the help guys realy appriciate it. The error i got at startup from the game, but after some searching i found out that after the last small patch or update the firewall was blocking the game for some reason. That's weird because i already gave permission to the firewall for this game. so i deleted the old permision and made a new one and now it works again. But it stays a mysterie as off why this happened.